html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    overflow: hidden;
    text-align: center;
}

input {
    height: 50px;
    width: 300px;
    margin-left: 10px;
    margin-bottom: 20px;
}

table{
  border-collapse:collapse;
  margin: 0 auto;
}

table, th, td{
  border: 1px solid;
}